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Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Summary of Net Finance Receivables Modified And Classified As TDRs (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | Loan	1,529
TDR Net Finance Receivables | $	$ 5,512	[1]
Small Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | Loan	766
TDR Net Finance Receivables | $	$ 1,464	[1]
Large Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | Loan	760
TDR Net Finance Receivables | $	$ 4,043	[1]
Retail Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | Loan	3
TDR Net Finance Receivables | $	$ 5	[1]
[1] Represents the post-modification net finance receivables balance of loans that have been modified during the period and resulted in a TDR.

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+ References

No definition available.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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- Definition

Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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